Title:
METHOD FOR PRODUCING TRISPHENOLMETHANE
Document Type and Number:
WIPO Patent Application WO/2023/058301
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a method for producing trisphenolmethane that has excellent productivity and with which it is possible to obtain a high purity trisphenolmethane that exhibits excellent transparency when used as a curing agent or a raw material for an epoxy resin. This method for producing a trisphenolmethane has: a trisphenolmethane synthesis step for causing a phenol (A) and an aromatic hydroxy aldehyde (B) to react in the presence of a Lewis acid catalyst (C) to synthesize a trisphenolmethane; a catalyst deactivation step for adding a catalyst deactivator (D) to the reaction liquid to deactivate the Lewis acid catalyst (C); a phenol addition step for adding a phenol (E) to the reaction liquid; a filtration step for filtering the reaction liquid to remove the Lewis acid catalyst (C) and the catalyst deactivator (D) from the reaction liquid; and a phenol removal step for removing the phenol from the filtrate to obtain the trisphenolmethane.
Inventors:
TAKEMURA KAZUYA (JP)
Application Number:
PCT/JP2022/028933
Publication Date:
April 13, 2023
Filing Date:
July 27, 2022
Export Citation:
Assignee:
JFE CHEMICAL CORP (JP)
International Classes:
C07C37/20; C08G8/08
Domestic Patent References:
| WO2015146504A1 | 2015-10-01 |
Foreign References:
| JP2018188590A | 2018-11-29 | |||
| JP2008184417A | 2008-08-14 |
Attorney, Agent or Firm:
ITOH Hideaki et al. (JP)
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